Multi-GNSS Precise Point Positioning (MGPPP)

Dear Colleagues,

Precise Point Positioning (PPP) is a technique that allows users to achieve centimetre- and millimetre-level positioning accuracy based on a single GNSS receiver. This is of central importance for many applications (i.e., plate tectonics, surface loading, earthquake monitoring) and also has a massive uptick in interest across multiple industries (i.e., surveying, precise agriculture, autonomous vehicles/drones, low-cost and dual-frequency chipsets for the mass-market, smartphone). Currently, PPP is typically combined with ambiguity resolution or RTK (Real Time Kinematic) technique and evolved to PPP-AR and PPP-RTK. To support this, Galileo and BDS satellite systems start the provisioning of HAS (high-accuracy service) and PPP-B2b service, respectively.

Multi-GNSS, multi-frequency, and multi-signal adopt more measurements and enable more new options in the linear combination than using the legacy dual-frequency measurements in PPP. On the other hand, this also makes it more challenging to handle different types of biases in ambiguity resolution. This Special Issue aims to discuss advances in using Multi-GNSS, multi-frequency, and multi-signal in PPP/PPP-AR/PPP-RTK, as well as in the computation of atmospheric parameters. New updates and assessments of HAS, PPP-B2b, or other services in smartphone, ground station, and low-earth orbit (LEO) satellite positioning are welcome, too.

Dr. Bingbing Duan
Prof. Dr. Urs Hugentobler
Dr. Jiang Guo
Guest Editors

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